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These are the sponges with calcareous (rather than siliceous) skeletons. Their spicules are made up of calcium carbonate; they are simple in structure or may have up to four rays. Members of the Class Calcarea are small. All species are marine.
Clathrinida/*
Find Clathrinida information at
To cite this page: 2001. "Clathrinida" (On-line), Animal Diversity Web. Accessed February 13, 2012 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Clathrinida.html
Disclaimer: The Animal Diversity Web is an educational resource written largely by and for college students. ADW doesn't cover all species in the world, nor does it include all the latest scientific information about organisms we describe. Though we edit our accounts for accuracy, we cannot guarantee all information in those accounts. While ADW staff and contributors provide references to books and websites that we believe are reputable, we cannot necessarily endorse the contents of references beyond our control.
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